The first thing you need to do is establish whatâs causing your wet or damp walls. You can have a pretty good idea of this depending on how damp your walls are and whether itâs a whole wall issue. First, test the dampness of your wall using a damp meter preferably, or failing that, the back of your hand.aulty Flashing, Guttering or Roof Tiles. It may be that your damp walls are being caused by faults in your roof or guttering. You can use a pair of good binoculars to check your guttering, the flashing on your roof and chimney stack and your roof tiles for any breaks or damage.
Best Answer: Common unit: Ohm (Ï) To find the SI unit, first take the definition of resistance, the Ohm's law: 1 Ï = 1 V / 1 A, or shortly, Ï = V/A. Now the ampere is itself a SI unit, volt is not. It's similarly easy and worth memorizing that J = VAs and J = kg*m^2/s^2. (I personally like to use the Joule as a side step.) Compare these two to get V = kg*m^2/(A*s^3). Plug in the Ï above to get Ï = kg * m^2 / (A^2 * s^3). Hope this helps!
Every material has an electrical resistance and it is the reason that the conductor give out heat when the current passes through it. Resistance is a measure of how much an object opposes the passage of electrons.The unit of electrical resistance is the ohm and it is represented by Ï. Every material has Resistance. Copper has a low resistance and wood has a high resistance.For example, a metre of copper has a resistance of only 1 Ohm but a metre of wood has a resistance of 10000000 ohm. We need resistance to reduce the flow of electrons through a circuit, so we can build resistors to behave as Electrical resistance.opper has a low resistance and wood has a high resistance. For example, a metre of copper has a resistance of only 1 Ohm but a metre of wood has a resistance of 10000000 ohm. We need resistance to reduce the flow of electrons through a circuit, so we can build resistors to behave as Electrical resistance.